When do I need a building approval for a retaining wall?

A permit for building works is required for retaining walls where;

• the wall is 1metre in height and greater above or below natural ground; or
• the wall is located within 1.5m of a building or structure and the wall supports the structure (including another retaining wall)
• there is a load imposed above the retaining wall (i.e. driveway, structure or the like)

Please note that other approvals may be required to comply with council's planning schemes. Please consult council's Plumbing and Drainage branch if retaining walls are proposed to be built over or near council’s infrastructure.

Please consult council's Development Compliance branch if a fence is proposed to be built on top of a retaining wall and the overall structure is over 2 metres requiring a siting variation/discretion.